It is essentially a list of several mildly difficult problems or exercises based on material already taught, which the student is expected to solve with a full written solution. There is no further research involved, and the goal is to learn and become familiar with the material and solving typical problems. They are usually issued once every week or two weeks, and due one or two weeks later. They are usually given a low weight, between 10% and 25% of the total mark of the course for all problem sets put together, and sometimes will count for nothing if the student receives a better grade on the exam.
Many students work in groups to solve them and help get a better understanding of the material, but most professors require each student to hand in their own individual problem set. Some professors explicitly encourage collaboration, some allow it, and some explicitly disallow it or consider it cheating. Most, however, do not, because they see the goal as primarily pedagogical. This is to be distinguished from larger, more important assignments, for which students are still expected to work independently.
Collaboration on problem sets has caused controversy, including a media storm around a student of Ryerson University, Chris Avenir, who started a forum on the social networking site Facebook for others to post their solutions. Despite passing the class, the professor failed him for his actions and he was recommended for expulsion, though the university faculty appeal committee overturned the recommended penalty, and gave him a zero grade for the assignments that were done through the course of the semester.
Eutrophication is a major problem set to increase as a result of greater demand for meat and fossil fuel, according to a report by US pressure group World Resources Institute.(Water in brief)(Brief article)
Aug 10, 2009; Eutrophication is a major problem set to increase as a result of greater demand for meat and fossil fuel, according to a report...